Pub Date : 2017-10-17DOI: 10.15578/IFRJ.23.1.2017.45-53
F. Satria, L. Sadiyah
A harvest strategy development for skipjack tuna (Katsuwonus pelamis - SKJ) fishery within Indonesia’s archipelagic waters (Indonesian Fisheries Management Areas - FMAs 713-715) has been initiated, which is mandated within its National Tuna, Skipjack and Neritic Tuna Management Plan. Information on the stock status or indicator is needed, since it is one essential component of a harvest strategy. In fact, the lack of catch and effort data from Indonesian fishery, in general, is still an international concern. A method to assess the stock status for data poor fisheries namely Length-based Spawning Potential Ratio (LB-SPR) was developed. This study attempted to investigate a possible use of the LB-SPR to estimate spawning potential ratios of SKJ using length data from Indonesian pole and line fishery collected by the port-based sampling program (a collaborative project between Indonesia and the Western and Central Pacific Fisheries Commission (WCPFC). There is a decreasing trend in the estimated SPR from 2010 to 2015 unless 2014, indicating that impact of fishing on the resources increased over the study period. If the SPR20% is adopted as limit SPR, then the estimated values of SPR less than SPR20% suggested that recruitment overfishing might be occurring. In fact, the results should be considered as preliminary results, as the size data of SKJ from pole and line might not be capturing large SKJ or the nature of SKJ in Archipealgic waters has smaller size in general compare to other region that potentially hampered the asymptotic selectivity assumption within the LB-SPR model underestimating the SPR. Further work is required to gather complete representative of length data of SKJ covering all length classes of the fishery.
{"title":"POSSIBLE USE OF LENGTH-BASED SPAWNING POTENTIAL RATIO FOR SKIPJACK (Katsuwonus pelamis) IN INDONESIA’S ARCHIPELAGIC WATERS","authors":"F. Satria, L. Sadiyah","doi":"10.15578/IFRJ.23.1.2017.45-53","DOIUrl":"https://doi.org/10.15578/IFRJ.23.1.2017.45-53","url":null,"abstract":"A harvest strategy development for skipjack tuna (Katsuwonus pelamis - SKJ) fishery within Indonesia’s archipelagic waters (Indonesian Fisheries Management Areas - FMAs 713-715) has been initiated, which is mandated within its National Tuna, Skipjack and Neritic Tuna Management Plan. Information on the stock status or indicator is needed, since it is one essential component of a harvest strategy. In fact, the lack of catch and effort data from Indonesian fishery, in general, is still an international concern. A method to assess the stock status for data poor fisheries namely Length-based Spawning Potential Ratio (LB-SPR) was developed. This study attempted to investigate a possible use of the LB-SPR to estimate spawning potential ratios of SKJ using length data from Indonesian pole and line fishery collected by the port-based sampling program (a collaborative project between Indonesia and the Western and Central Pacific Fisheries Commission (WCPFC). There is a decreasing trend in the estimated SPR from 2010 to 2015 unless 2014, indicating that impact of fishing on the resources increased over the study period. If the SPR20% is adopted as limit SPR, then the estimated values of SPR less than SPR20% suggested that recruitment overfishing might be occurring. In fact, the results should be considered as preliminary results, as the size data of SKJ from pole and line might not be capturing large SKJ or the nature of SKJ in Archipealgic waters has smaller size in general compare to other region that potentially hampered the asymptotic selectivity assumption within the LB-SPR model underestimating the SPR. Further work is required to gather complete representative of length data of SKJ covering all length classes of the fishery.","PeriodicalId":31292,"journal":{"name":"Indonesian Fisheries Research Journal","volume":"23 1","pages":"45-53"},"PeriodicalIF":0.0,"publicationDate":"2017-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44744679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-10-17DOI: 10.15578/IFRJ.23.1.2017.17-22
A. Suman, Ap’idatul Hasanah, T. Ernawati, A. Pane
Scientific advices on population dynamic of banana prawn (P. merguiensis de Man) are required as an input to support an apropriate fisheries management. This study aims to identify the population parameters of the banana prawn in Tanah Laut waters. The study was conducted in Tanah Laut based on monthly enumeration data (January to November 2016). Results has been shown that the length size of carapace at first maturity of banana prawn was 43.39 mm. Sex ratio of males and females was 1 : 0.8. The chi square test indicated that comparison of male and female of the banana prawn was significantly different. It means that there was not balance in number between males and females. The spawning season of banana prawn in Tanah Laut waters happened throughout year and reached the peak on November (south-east monsoon). The growth parameter of banana prawn was 1.05/year with maximum carapace length (Loo) of 55.0 mm. Instantaneous total mortality (Z) and natural mortality (M) were 6.05/year and 1.58/year, respectively. While fishing mortality (F) and exploitation rate (E) respectively were 4.47/year and 0.74/year respectively. The exploitation rate of banana prawn in Tanah Laut waters was high. Therefore, fishing effort of the banana prawn in that waters should be reduced to about 48 % for next coming year.
{"title":"THE POPULATION DYNAMIC OF BANANA PRAWN (Penaeus merguiensis de Man) IN TANAH LAUT WATERS, SOUTH KALIMANTAN","authors":"A. Suman, Ap’idatul Hasanah, T. Ernawati, A. Pane","doi":"10.15578/IFRJ.23.1.2017.17-22","DOIUrl":"https://doi.org/10.15578/IFRJ.23.1.2017.17-22","url":null,"abstract":"Scientific advices on population dynamic of banana prawn (P. merguiensis de Man) are required as an input to support an apropriate fisheries management. This study aims to identify the population parameters of the banana prawn in Tanah Laut waters. The study was conducted in Tanah Laut based on monthly enumeration data (January to November 2016). Results has been shown that the length size of carapace at first maturity of banana prawn was 43.39 mm. Sex ratio of males and females was 1 : 0.8. The chi square test indicated that comparison of male and female of the banana prawn was significantly different. It means that there was not balance in number between males and females. The spawning season of banana prawn in Tanah Laut waters happened throughout year and reached the peak on November (south-east monsoon). The growth parameter of banana prawn was 1.05/year with maximum carapace length (Loo) of 55.0 mm. Instantaneous total mortality (Z) and natural mortality (M) were 6.05/year and 1.58/year, respectively. While fishing mortality (F) and exploitation rate (E) respectively were 4.47/year and 0.74/year respectively. The exploitation rate of banana prawn in Tanah Laut waters was high. Therefore, fishing effort of the banana prawn in that waters should be reduced to about 48 % for next coming year.","PeriodicalId":31292,"journal":{"name":"Indonesian Fisheries Research Journal","volume":"23 1","pages":"17-22"},"PeriodicalIF":0.0,"publicationDate":"2017-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42834009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-10-17DOI: 10.15578/IFRJ.23.1.2017.39-44
A. S. Nastiti, M. R. A. Putri, J. Haryadi, A. Wibowo, N. Wiadnyana
Marine turtle is one of the protected aquatic animals as listed in CITES Appendix and IUCN red list. However, illegal fishing of marine turtle is still occurred Padei Laut Village, in Morowali Regency, Central Sulawesi Province, Indonesia. The research aims to study the population of marine turtle based on the carapace length and the genetic relationships. Data of carapace length was measured in-situ and genetic analysis was used mitochondrial DNA. The results showed that the carapace (ten samples which was green turtles/Chelonia mydas) was ranges between 42-102 cm; 91% of samples was immature and 9% was mature. Moreover, it also revealed that those turtles resembled by 99.98% of genetic similarity.
{"title":"ANALYSIS 16S RDNA OF THE TURTLES IN FORECLOSURE CAGES AT PADEI LAUT, CENTRAL SULAWESI, INDONESIA","authors":"A. S. Nastiti, M. R. A. Putri, J. Haryadi, A. Wibowo, N. Wiadnyana","doi":"10.15578/IFRJ.23.1.2017.39-44","DOIUrl":"https://doi.org/10.15578/IFRJ.23.1.2017.39-44","url":null,"abstract":"Marine turtle is one of the protected aquatic animals as listed in CITES Appendix and IUCN red list. However, illegal fishing of marine turtle is still occurred Padei Laut Village, in Morowali Regency, Central Sulawesi Province, Indonesia. The research aims to study the population of marine turtle based on the carapace length and the genetic relationships. Data of carapace length was measured in-situ and genetic analysis was used mitochondrial DNA. The results showed that the carapace (ten samples which was green turtles/Chelonia mydas) was ranges between 42-102 cm; 91% of samples was immature and 9% was mature. Moreover, it also revealed that those turtles resembled by 99.98% of genetic similarity.","PeriodicalId":31292,"journal":{"name":"Indonesian Fisheries Research Journal","volume":"23 1","pages":"39-44"},"PeriodicalIF":0.0,"publicationDate":"2017-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46520046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-10-17DOI: 10.15578/IFRJ.23.1.2017.7-15
I. Jatmiko, H. Andrade, B. Nugraha
Relative abundance indices as calculated based on commercial catches are the input data to run stock assessment models to gather useful information for decision making in fishery management. A Generalized Linear Model (GLM) was used to calculate relative abundance indices and effect of longline fishing gear configuration. Data were collected by a scientific observer program from August 2005 to November 2013. Most of the boats monitored were based in the Benoa Port, Bali. Catches are often equal to zero because swordfish is a bycatch for Indonesian longline fleets. Therefore, a hurdle model and a binomial distribution was used to model the proportion of positive catch rates, while a gamma distribution were used to model the positive longline sets. Correlations between the proportion of positive sets and year () and quarter () were weak. However, linear correlation between the proportion of positive sets and the length of branch lines () and number of hooks between floats () were negative and significant. The probability of success is higher for surface longline with small number of hooks and short branch lines. Models with year in interactions as random effects did not converge. Models with year in interactions as fixed effects did converge, but the estimation of standard errors of year coefficients were high. Meaningful estimations were obtained only when using the simplest model, in which year is not in interactions. The low proportional decrease of deviance indicates that most of the variability of catch rates of swordfish caught by Indonesian longline boats are not related to year, quarter, number of hooks between floats and the length of branch lines. Other variables and information, like the daytime while the longlines deployed in the water (day or night), type of bait, size and type of hooks, and if the fishermen use light-sticks to attract the fish, are necessary to better understand the catch rate, and improve the estimations of the relative abundance indices.
{"title":"DELTA MODEL APPROACH FOR CPUE STANDARDIZATION OF SWORDFISH (Xiphias gladius Linnaeus, 1978) CAUGHT BY INDONESIAN LONGLINE FLEET IN THE EASTERN INDIAN OCEAN","authors":"I. Jatmiko, H. Andrade, B. Nugraha","doi":"10.15578/IFRJ.23.1.2017.7-15","DOIUrl":"https://doi.org/10.15578/IFRJ.23.1.2017.7-15","url":null,"abstract":"Relative abundance indices as calculated based on commercial catches are the input data to run stock assessment models to gather useful information for decision making in fishery management. A Generalized Linear Model (GLM) was used to calculate relative abundance indices and effect of longline fishing gear configuration. Data were collected by a scientific observer program from August 2005 to November 2013. Most of the boats monitored were based in the Benoa Port, Bali. Catches are often equal to zero because swordfish is a bycatch for Indonesian longline fleets. Therefore, a hurdle model and a binomial distribution was used to model the proportion of positive catch rates, while a gamma distribution were used to model the positive longline sets. Correlations between the proportion of positive sets and year () and quarter () were weak. However, linear correlation between the proportion of positive sets and the length of branch lines () and number of hooks between floats () were negative and significant. The probability of success is higher for surface longline with small number of hooks and short branch lines. Models with year in interactions as random effects did not converge. Models with year in interactions as fixed effects did converge, but the estimation of standard errors of year coefficients were high. Meaningful estimations were obtained only when using the simplest model, in which year is not in interactions. The low proportional decrease of deviance indicates that most of the variability of catch rates of swordfish caught by Indonesian longline boats are not related to year, quarter, number of hooks between floats and the length of branch lines. Other variables and information, like the daytime while the longlines deployed in the water (day or night), type of bait, size and type of hooks, and if the fishermen use light-sticks to attract the fish, are necessary to better understand the catch rate, and improve the estimations of the relative abundance indices.","PeriodicalId":31292,"journal":{"name":"Indonesian Fisheries Research Journal","volume":"23 1","pages":"7-15"},"PeriodicalIF":0.0,"publicationDate":"2017-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42051501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-16DOI: 10.15578/IFRJ.1.1.1995.1-10
T. Ahmad, Emma Suryati, Muliani Muliani
Sponges are suspected of having potential for producing bioactive material that can be used for various purposes. The experiment aimed at identifying sponges which could produce bioactive materials for fish health management purposes
{"title":"SCREENING SPONGES FOR BACTERIOCIDE TO BE USED IN SHRIMP CULTURE","authors":"T. Ahmad, Emma Suryati, Muliani Muliani","doi":"10.15578/IFRJ.1.1.1995.1-10","DOIUrl":"https://doi.org/10.15578/IFRJ.1.1.1995.1-10","url":null,"abstract":"Sponges are suspected of having potential for producing bioactive material that can be used for various purposes. The experiment aimed at identifying sponges which could produce bioactive materials for fish health management purposes","PeriodicalId":31292,"journal":{"name":"Indonesian Fisheries Research Journal","volume":"1 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2017-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44212188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-16DOI: 10.15578/IFRJ.1.1.1995.87-99
Hari Eko lrianto, Sri Pudjiastuti, P. Suptijah
Most fish meal weste oil encountered in Indonesia has high free fatty acid (FFA) value, dark colour end strong fishy odour. Thus, the oil needs refining process for the quality improvement before-further uses, such as by alkali refining application.
{"title":"EFFECTS OF NEUTRALIZATION PERIOD AND TEMPERATURE IN ALKALI REFINING ON THE QUALITY OF SARDINE OIL","authors":"Hari Eko lrianto, Sri Pudjiastuti, P. Suptijah","doi":"10.15578/IFRJ.1.1.1995.87-99","DOIUrl":"https://doi.org/10.15578/IFRJ.1.1.1995.87-99","url":null,"abstract":"Most fish meal weste oil encountered in Indonesia has high free fatty acid (FFA) value, dark colour end strong fishy odour. Thus, the oil needs refining process for the quality improvement before-further uses, such as by alkali refining application.","PeriodicalId":31292,"journal":{"name":"Indonesian Fisheries Research Journal","volume":"1 1","pages":"87-99"},"PeriodicalIF":0.0,"publicationDate":"2017-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46775005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-16DOI: 10.15578/ifrj.1.1.1995.11-22
M. F. Sukadi
The influence of water hardness on spawning and egg production of giant freshwater prawn, Macrobracbium rosenbergii de Man was investigated in indoor tanks during a 132 day study.
在室内试验池中研究了水硬度对罗氏沼虾(macroabbium rosenbergii de Man)产卵和产卵量的影响。
{"title":"THE INFLUENCE OF WATER HARDNESS ON GIANT FRESHWATER PRAWN (Macrobrachium rosenbergii de Man) SPAWNING AND EGG PRODUCTION","authors":"M. F. Sukadi","doi":"10.15578/ifrj.1.1.1995.11-22","DOIUrl":"https://doi.org/10.15578/ifrj.1.1.1995.11-22","url":null,"abstract":"The influence of water hardness on spawning and egg production of giant freshwater prawn, Macrobracbium rosenbergii de Man was investigated in indoor tanks during a 132 day study.","PeriodicalId":31292,"journal":{"name":"Indonesian Fisheries Research Journal","volume":"1 1","pages":"11-22"},"PeriodicalIF":0.0,"publicationDate":"2017-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42308317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-16DOI: 10.15578/IFRJ.1.1.1995.42-57
E. S. Kartamihardja
A study the growth, mortality, exploitation rate and recruitment of three species of cyprinids (Puntius gonionotus, P. bramoides and Mystacohucts marginatus) was carried out in Kedungombo reservoir, Central Java.
{"title":"POPULATION DYNAMICS OF THREE SPECIES OF CYPRINIDS IN KEDUNGOMBO RESERVOIR, CENTRAL JAVA","authors":"E. S. Kartamihardja","doi":"10.15578/IFRJ.1.1.1995.42-57","DOIUrl":"https://doi.org/10.15578/IFRJ.1.1.1995.42-57","url":null,"abstract":"A study the growth, mortality, exploitation rate and recruitment of three species of cyprinids (Puntius gonionotus, P. bramoides and Mystacohucts marginatus) was carried out in Kedungombo reservoir, Central Java.","PeriodicalId":31292,"journal":{"name":"Indonesian Fisheries Research Journal","volume":"1 1","pages":"42-57"},"PeriodicalIF":0.0,"publicationDate":"2017-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43668182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"SOUTHERN BLUEFIN TUNA IN THE INDONESIAN LONGLINE FISHERY: HISTORICAL DEVELOPMENT, SEASON, SOME BIOLOGICAL PARAMETERS; LANDING ESTIMATION AND CATCH STATISTICS FOR 1993","authors":"T. Davis, S. Bahar, J. Farley","doi":"10.15578/IFRJ.1.1.1995.68-86","DOIUrl":"https://doi.org/10.15578/IFRJ.1.1.1995.68-86","url":null,"abstract":"The longline fishery based in Beli her expended rapidly in rcccnt ycrrs: 291 vcarcls, mdnly of reiwancsc origin, operatcd out of Benor in 1993.","PeriodicalId":31292,"journal":{"name":"Indonesian Fisheries Research Journal","volume":"1 1","pages":"68-86"},"PeriodicalIF":0.0,"publicationDate":"2017-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46233036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-16DOI: 10.15578/IFRJ.1.1.1995.23-41
Husnah Husnah
An experiment in order to know the effect of fertilizers on diel variation of pH and dissolved oxygen (DO) in pondw.ter was carried out for t6 weeks in acid sulphate soil frcshwater fisiponds at the Research Station For Freshwater Fisheries Kertamulia, South Sumetra, Indonesia
{"title":"DIEL VARIATION OF pH AND DISSOLVED OXYGEN IN DIFFERENT FERTILZED FISHPONDS BUILT ON ACID SULPHATE SOILS","authors":"Husnah Husnah","doi":"10.15578/IFRJ.1.1.1995.23-41","DOIUrl":"https://doi.org/10.15578/IFRJ.1.1.1995.23-41","url":null,"abstract":"An experiment in order to know the effect of fertilizers on diel variation of pH and dissolved oxygen (DO) in pondw.ter was carried out for t6 weeks in acid sulphate soil frcshwater fisiponds at the Research Station For Freshwater Fisheries Kertamulia, South Sumetra, Indonesia","PeriodicalId":31292,"journal":{"name":"Indonesian Fisheries Research Journal","volume":"1 1","pages":"23-41"},"PeriodicalIF":0.0,"publicationDate":"2017-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44195811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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